Troubleshooting
Troubleshooting Performance Test Problems
1-56
Troubleshooting Performance Test Problems
When a performance test fails and all self-tests have passed, use the following table to locate the most likely
failure.
Table 1-35 Troubleshooting Performance Test Problems
Performance test that is failing... Action to perform...
Maximum Leveled Output Power Refer to “Troubleshooting the RF Path” on page 1-58.
Power Level Accuracy Perform
Power Flatness Calibration,
Attenuator Calibration-Low Band and High Band Power,
Attenuator Calibration-High Band and High Power,
Attenuator Calibration-Low Band and Low Power, and
Attenuator Calibration-High Band and Low Power.
Internal Pulse Modulation Level Accuracy
Internal Pulse Modulation Rise/Fall Time
Internal Pulse Modulation Minimum Pulse Width
If the frequency ≤3.2 GHz, check the
A11 Pulse/Analog Modulation Generator or the A8 Output.
If the frequency is >3.2 GHz, check
A11 Pulse/Analog Modulation Generator and the A10 ALC.
If the Internal Pulse Modulation Minimum Pulse Width test
fails a Pulse Width Calibration should be performed prior to
replacing any assembly.
DC FM Carrier Offset Perform DC FM Calibration.
If still failing, check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
External AM Frequency Response If the frequency is ≤3.2 GHz, check the
A11 Pulse/Analog Modulation Generator or the A8 Output.
If the frequency is >3.2 GHz, check the
A11 Pulse/Analog Modulation Generator and the A10 ALC.
Internal FM Frequency Response Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
External Phase Modulation Frequency Response Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
Internal FM Distortion Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
Internal Phase Modulation Distortion Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
External FM Deviation Accuracy Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
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